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Abstract
We have studied hadron production in e('+)e('-) annihilation at 29 GeV center-of-mass energy using the PEP-4 Time Projection Chamber Detector. The inclusive sections and mean multiplicities for (pi)('(+OR-)), K('(+OR-)) and (p + p) production have been measured using ionization energy loss to separate particle species. We find on average 10.7 (+OR-) 0.6 (pi)('(+OR-)), 1.35 (+OR-) .13 K('(+OR-)) and 0.60 (+OR-) 0.08 (p + p) per multihadron event. The differential cross section is well described by a number of Monte Carlo hadronization models. In addition, we have observed correlations in rapidity space for identified pions and kaons. Short-range KK correlations provide evidence for local flavor compensation during hadronization. Long-range (pi)(pi) and KK correlations indicate that the initial partons carry flavor. We also observe significant long-range (pi)K correlations as a result of heavy quark decays.
